/*
 * This is Melet, a salary slip designer. Feed it with data regarding to salary payment, prepare it for print through the graphical presentation, and you have it done.
 * Copyright (C) 2014, AFDiaX
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * This program is based on UMLet, a Free UML Tool for Fast UML Diagrams.
 * To contact the authors of UMLet visit https://code.google.com/p/umlet/people/list
 * To contact the authors of Melet visit https://gna.org/users/gabocze
 */
package com.baselet.gwt.client.base;

public enum Browser {
	INTERNET_EXPLORER("MSIE"),
	FIREFOX("Firefox"),
	CHROME("Chrome"), // also includes CHROME_ANDROID which would have browserFilters=["Android", "Chrome"]
	OPERA("Opera"),
	ANDROID_STOCK_BROWSER("Android"), // android chrome also have "Android" in its useragent but matches CHROME before coming here
	UNKNOWN("######");

	private String[] browserFilters;

	private Browser(String... browserFilters) {
		this.browserFilters = browserFilters;
	}

	public static Browser get() {
		String currentAgent = getUserAgent();
		for (Browser b : Browser.values()) {
			if (browserFiltersMatch(currentAgent, b)) {
				return b;
			}
		}
		return UNKNOWN;
	}

	private static boolean browserFiltersMatch(String currentAgent, Browser b) {
		for (String filterString : b.browserFilters) {
			if (!currentAgent.contains(filterString)) {
				return false;
			}
		}
		return true;
	}

	private final native static String getUserAgent() /*-{
		return navigator.userAgent;
	}-*/;
}
